[Bug middle-end/104880] [11 Regression] ICE in expand_expr_addr_expr_1, at expr.c:8231 since r11-165-geb72dc663e9070

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104880

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:cf6c812718673cbf89bb96fb2427ee9923bf2a90

commit r11-9780-gcf6c812718673cbf89bb96fb2427ee9923bf2a90
Author: Richard Biener <rguenther@suse.de>
Date:   Fri Mar 11 14:09:33 2022 +0100

    tree-optimization/104880 - update-address-taken and cmpxchg

    The following addresses optimistic non-addressable marking of
    an argument of __atomic_compare_exchange_n which broke when
    I added DECL_NOT_GIMPLE_REG_P since we cannot guarantee we can
    rewrite it when TREE_ADDRESSABLE is unset.  Instead we have to
    restore TREE_ADDRESSABLE in that case.

    2022-03-11  Richard Biener  <rguenther@suse.de>

            PR tree-optimization/104880
            * tree-ssa.c (execute_update_address_taken): Remember if we
            optimistically made something not addressable and
            prepare to undo it.

            * g++.dg/opt/pr104880.cc: New testcase.

    (cherry picked from commit eb5edcf3f3ae008a1c55c88f08a886a5f350a759)